SOME BASIC JAVA PROGRAMS:-

1. DIVISION OF TWO NUMBERS

import java.io.*;
class division
{
  public static void main()throws IOException
  {
      InputStreamReader isr = new InputStreamReader(System.in);
      BufferedReader br = new BufferedReader(isr);
     
      System.out.println("enter a no.");
      String s = br.readLine();
      float a = Float.parseFloat(s);
     
      System.out.println("enter another no.");
      String p = br.readLine();
      float b = Float.parseFloat(p);
     
      float c = a/b;
      float d = a%b;
      System.out.println("the quotient is "+c);
      System.out.println("the remainder is "+d);
    }
}
     

2. DIVISION AND FINDING INTEGRAL QUOTIENT:-

import java.io.*;
class division2
{
  public static void main()throws IOException
  {
      InputStreamReader isr = new InputStreamReader(System.in);
      BufferedReader br = new BufferedReader(isr);
     
      System.out.println("enter a no.(N)");
      String s = br.readLine();
      int n = Integer.parseInt(s);
     
      System.out.println("enter another no.(D)");
      String p = br.readLine();
      int d = Integer.parseInt(p);
     
      double a = new Double(n).doubleValue()/d;
      int b = n/d;
      float r = n%d;
     
      System.out.println("the quotient is "+a);
      System.out.println("the integral quotient is "+b);
      System.out.println("the remainder is "+r);
    }
}
     
     
     
3. CHECK IF A STUDENT HAS PASSED IN 3 SUBJECTS:-
(CALCULATING AVERAGE AND CHECKING IF AVERAGE>50%)
 
import java.io.*;
class result
{  
    public static void main()throws IOException
    {
        InputStreamReader isr = new InputStreamReader(System.in);      
        BufferedReader br = new BufferedReader (isr);
       
        System.out.println("Enter marks in Maths");
        String a = br.readLine();
        float p = Float.parseFloat(a);
       
        System.out.println("Enter marks in English");
        String b = br.readLine();
        float q = Float.parseFloat(b);
       
        System.out.println("Enter marks in Maths");
        String c = br.readLine();
        float r = Float.parseFloat(c);
       
        float n = (p+q+r)/3;
       
        if (n>=50)
        {
                System.out.println("you have passed");
            }
            else
            {
                System.out.println("you have failed");
            }
        }
    }
       
4. PRINTING OF EVEN NUMBERS FROM 1 TO 50
import java.io.*;
class even_numbers
{  
    public static void main()
    {
        for(int i=2 ; i<=50 ; i=i+2)
        {
            System.out.print(i+"  ");
        }
    }
}
       
5. PRINTING OF ODD NUMBERS FROM 1 TO 50

import java.io.*;
class odd_numbers
{  
    public static void main()
    {
        InputStreamReader isr = new InputStreamReader(System.in); 
       
        for(int i=1 ; i<=50 ; i=i+2)
        {
            System.out.println(i);
        }
    }
}